*{
    margin:0 auto;
}
.top{
    width: 1440px;
    height: 60px;
    /* background-color: aqua; */
}
.top .lest{
    width: 150px;
    height: 60px;
    float: left;
    background-position: center;
    text-align: center;
}
.首页{
    width: 50px;
    height: 60px;
    float: left;
    text-align: center;
}
.首页 span{
    text-align: center;
    font-size: 20px;
    color: blue;
}
.leftPad{
    float: left;
    width: 300px;
    height: 1000px;
    background-color: aqua;

}
.centerPad{
    float: left;
    width: auto;
    height: 1500px;
    background-color: brown;
}
